Locomotive bed



July 2@ 1926.,

H. M. PFLAGER LOCOMOTIVE BED Filed Nov. 27, 1925 z'sheets-sneet 1 July20, 1926. v 1,593,468

, H. M. PFLAGER LOCOMOTIVE BED Filed Nov. 27, 1925 2 Sheets-Sheet 2 @wwwPatented july 20, 1925.

UNITED STATES PATENT OFFICE.

HARRY M. PFLAGER, F ST. LOUIS, MISSOURI, ASSIGNOR TO COMMONWEALTH STEELCOMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEYS`LOCOMOTIVE BED.

Application led November v27, 1925.

My invention relates to railway locomotive structures, and consists inan improved bed for locomotives comprising essentially a box girderthroughout the main portion I of its length and preferably being formedof a one-piece casting.

The main object of my invention is to produce a locomotive framepossessing, without undue weight, a high degree o rigidity and strengthto resist deflection, not only in ordina service but also when beinghandled, elther alone or when the locomotive assembly is completed, bycranes or otherwise.

A further object of my invention is to provide in such a bed integralpedestals also boxshaped in cross section and preferablyv utilizing thewalls of the bed proper as portions oft e pedestal walls.

Further objects of my invention are to provide in a one-piece casting abed of the type described having inte al cylinders and 1 steam supplychambers, va ve gear brackets, brake hanger fulcrums, deck plates, andequalizer brackets, a cradle and a radial pivot bearing.

In the accompanying drawings which illustrate a selected embodiment ofmy invention Figure 1 is atop view of my improved Figure 2 is a verticallongitudinalrsection through the center of the bed.

Figure 3 is a horizontal longitudinal section 'taken substantiatlly on,'ne 3 3 of Figure 2.

igure 4 is a side elevation.

Figures 5 to 9 and y12 are vertical transverse sections taken on lines 55, 6 6, 7 7, 8 8, 9 9 and 12-12, respectively, of Figure 1.

Figure 10 is a similar section taken on line 10-10 of Figure 4.

Figure 11 is a vertical transverse section taken on line 11-11 ofFigure2.

In' Figures 2 and 4, the driver, trailer, and pony truck wheels areindicated in broken lines. v

As more clearly indicated in the cross sectional views, the body of thebed is boxsha in cross-section and includes sides 1, an top and bottomwalls 2 and 3respec- Serial No. 71,640.

tively, these walls being provided with suitable openings 4: atintervals which lighten the structure without weakening it for thepurpose indicated. Similarly the side walls 1 are provided with openings5. At intervals along the bed are Walls 6 parallelingside walls 1 andcooperating therewith to form pedestal jaws for receiving the driverboxes. The pedestal jaws so formed are also box-shape in cross sectionand the form of the bed and pedestals is such that anges are omitted onthe outside of the bed, thereby avoiding interference with theapplication and removal of the springs and equalizers; in other words,affording maximum clearance between the wheels and bed casting. I haveindicated the sides of the main frame as being indented at l to providefurther clearance between the same and the drivers and their boxes.

At the rear of the bed proper I form the cradle consisting of sideframes 7, a rear deck 8, and lateral extensions 9 provided with sidebearings for resting u on the trailer truck` (not shown). Preferaibly,the cradle is formed integrally with the body ofthe bed, the side frames7 mer ing with and forming a continuation of wal s 6 of the rear driverbox pedestal. The rear e'nd of the Y cradle has an integral drawbarpocket 10.

The rear end of the body of the bed has Aa pivot bearing 11, formedintegrally on its lower wall 3, to which the forward portion of thetrailer truck frame (not shown) may be secured in the usual manner.

Formed integrally with the pedestal jaws are fulcrums 12 for theattachment of brake hangers and also formed integrally with the edestalsare e ualzer fulcrums 13. Erackets for the va ve gear are indicated at14, these being formed integrally with the bed and projecting outwardlytherefrom. The forward ortion of the frame is formed integrally wit themain body vportion Vbut is reduced 1n height and preferably carriesintegral cylinder 15 and steam supply chambers 16 similar to thedisclosure in my copending application Serial No. 7 52,277 filed Dec.11, 19247 and patented Dec. 22, 1925, No. 1,566,423.

If it is desired to apply steam cylinders and supply chests to the bedas separate units, each side wall of the frame may be finished with afinished pad 17, indicated at the righthand side of Figures 1 and 6, towhich the cylinders and steam supply devices may be ap lied in the usualmanner.

Intermediate t e side walls 1 of the bed are vertical transverse walls18 which reinforce the structure and these walls may be lightened bysuitable openings 19 as shown.

With the above described structure, the individual features referred toare formed as part of a one-piece casting. This eliminates all work andmateriaI required for assemblinga number of parts and avoids any needfor future repairs due to loosening of attached parts. Distances betweenspaced elements are rigidly maintained. The strength of the frame fromend to end is increased and the frame may be handled safely by cranes,jacks, or otherwise, which has not been true herebefore of frames ofsuch size and frequent'breakages have occurred rior to the production ofthe box girder rame illustrated.

I contemplate such modifications of my invention as may be suggested inits commercial development and as are included in the scope of theappended claims.

I claim 1. A locomotive bed comprising a onepiece casting forming a boxgirder.

2. A one-piece cast-ing comprising a locomotive bed box-shape in crosssection, and a cradle formed integrally therewith.

3. In a locomotive bed, a main frame consisting of a box girder, anddriver .box pedestals on the exterior of said girder.

4. In a locomotive bed, a main frame consisting of a box girder, anddriver box pedestals on the exterior of said girder and formedintegrally therewith.

5. In a locomotive bed, a box girder forming a main frame, and wallsparalleling the outer faces of said girder and forming therewithbox-shaped pedestals for the driver boxes.

6. In a locomotive bed, a one-piece casting comprising a main framebox-shape in cross section, and driver box pedestals on each side ofsaid main frame, each of which pedestals is box-shape in cross section.

7 In a locomotive bed, a main frame consisting of a box-girder and acradle extending rearwardly of said main frame and including side frameseach integrally connected to the side of said box girder.

8. In a locomotive bed, a main frame consisting of a box girder,supplemental pedestal elements paralleling and formed integrally withthe sides of said girder and located outside thereof, and a cradleincluding side frames integral with said girder and elements and alignedwith said elements.

9. In a locomotive bed, a main frame comprising a box girder, integralpedestals p0- sitioned outside of said girder, and integralreinforcements extending across said girder adjacent said pedestals. v

10. In a locomotive bed, a main frame comprising a box girder, and apivot bearing for a radial trailer truck formed integrally with thebottom of said girder.

11. In a locomotive bed, a main frame comprising a box girder, pedestalsoutside of said girder and formed integrally therewith and equalizerfulcrums on the outside of sai pedestals and formed integrallytherewith.

12. In a locomotive bed, a main frame comprising a box girder, verticalwalls spaced from the sides of said girder, and integral projections onsaid walls and girder sides forming brake hanger fulcrums.Y

13. In a locomotive bed, a box girder main frame, integral pedestalljaws formed thereon and projecting outwardly from the main frame.I thesides of said main frame being indented between each pair of pedestaljaws.

14. In a locomotive bed, a main frame comprising a box girder, pedestalsoutside of said girder and formed integrally therewith, and valve gearbrackets on the outside of said pedestals and formed integrallytherewith.

15. In a locomotive bed, a main frame comprising a box girder,pedestals, valve gear brackets, brake hanger fulcrums, and a cradle allformed integrally with said girder. v

16. In a locomotive bed, a main frame comprising a box girder,pedestals, valve gear brackets, brake hanger fulcrums, and cradle sideframes all formed integrally with said girder but located outsidethereof.

17. In a locomotive bed, a main frame comprising a box girder with steamcylinders formed integrally therewith.

18. In a locomotive bed, a main frame comprising a box girder with steamcylinders and valve gear brackets formed integrally therewith.

19. In a locomotive bed, a main frame comprising a box girder with steamcylinders and pedestals formed integrally on the outer faces of saidgirder.

20. In a locomotive bed. a main frame comprising a box girder with steamcylinders, valve gear brackets and pedestals formed integrally on theouter faces of said girder.

21. In a locomotive bed, a main frame comprising a box girder with steamsupply chambers formed integrally therewith.

22. In a locomotive bed, a main frame comprising a box girder with steamcylinders and steam supply chambers formed integrally therewith.

23. In a locomotive bed, a main frame comprising a box girder with steamcylinmesses 8 ders, Valve gear brackets and steam supply 25. ln a.locomotive frame, a' main frame chambers formed integrall therewith.comprising a box girder with steam.cylin 24. In a locomotive be a mainframe ders, steam supply chambers, pedestals, and 10 comprisingr a boxgirder with steam cylna cradle frame, all formed integrally. 5 ders,valve gear brackets, steam supply ln testimony whereof I hereunto afixmy chambers, and pedestals formed integrally signature this 17th daIvIof November, 1925. therewith. M. PFLAGER.

